Stephen d



S. D. TUCKER. Revolving Type Bed.

No. 230,973. Patented Aug. 10,1880'.

l5 *l5 Mmmm ff 1|Illllllllllmllllllllillllll 1,.

'lllllllIlllllllllllllllllllll 1 W muuff Il.

IIIIIII illlllllllll lmnnrnnfimumlm |l||||s1||| lIlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllIllllIlllllllllllllllllllllllllllllllllllllllIlIi||IIIIIIHIIIIHIIIIIIHUIIIIIIlllllIIIIIIIlIlIIIIIILIIIIIIIIIIIIIIIllllIIIIJHIIIIIIHIIIIIIIIIIlllllllllllllllllllllll"llllllllllllllllllllllllllllllllllgi [n v en law- @Qt-4922.0,70er

y ATTORNEYS RPH WASHINGTON D C mnsses STEPHEN D. TUCKER, OF NEW YORK, N.Y.

REVOLVING TYPE-BED.

SPECIFICATION forming part of Letters Patent No. 230,973, dated August10, 1880.

Application filed April 21, 1877.

To all whom fit may concern Beit known that I, STEPHEN D. TUCKER, of thecity, county, and State of New York, have invented certain new anduseful Improvements in Revolving Type-Beds, ot' which the following is afull, clear, and exact description.

In the accompanying drawings, Figure 1 is a plan view of the type-bed;Fig. 2,-a transverse sectional elevation of the same on linee of Fig. 1;Fig. 3, a transverse sectional elevation of the same on line y, Fig. 1,showing the construction of one of the ends; Fig. 4, a longitudinalsection of one end ofthe typebed on line x, Fig. 2, showing the bottompiece and column-rule in elevation; Fig. 5, an end view ofthelocking-bar; Fig. 6, plan and end views of one of the bottom pieces; andFig. 7 plan and sectional views of a column-rule.

rThe type-cylinders of type-revolving printing-machines are limited insize by the width of the wed ge-s'naped space formed by the sides of twoadjacent columns of type, which space is filled by the taperedcolumn-rule, for it is obvious that the sm aller the cylinder, the widerthis space becomes at the surface or faces of the type, and consequentlythe broader the blank line between the printed impressions from twoadjacent columns of type. Moreover, this space is increased by thethickness required for the narrow feet of the columnrules now used,which must be made thick enough to give them the strength necessary tohold them and the type in place in the typebed. The greater this blankspace is made the wider the printed page must become, the cost of paperis thus increased and the printed page rendered unsightly.

The object of this invention is the reduction of this space between thefaces of the types composing columns set side by side upon a curvedsurface; and it consists in a construction of parts which permits theuse of a very thin column-rule, whereby the size of the typecylinder maybe greatly reduced, while the space between the columns of type is nogreater than in the constructions now in use.

In carrying out my invention the feet of the column-rules are made toextend the whole length of the type-bed, and are provided at theirbottoms with flanges 5 projecting from both sides. (See Fig. 7.) Thesecolumn-rules rest throughout their whole length upon theconvexedly-curved base-plate 7 ot' the typebed, and are secured inpositions parallel to eachother by interposi n g between them bottompieces, 3, which are of column width. These bottom pieces are providedat their ends with tenons 13, which lit into rabbeted recesses S formedin the ends 11 of the type-bed, and at one or more points of theirlength with feet 4, provided at each side with projections 1, whichadapt them to entertransverse rabbeted grooves 6 in the base-plate 7.The said bottoln pieces are thus held iirinly in place in the type-bed,and being provided on their lower edges with rabbets 18, which fit overthe iianges 5 ofthe column-rules 2, securely lock said column-rulesbetween them.

The bottom pieces, 3, are introduced vertically into the type-bed byreason of their teuons 13 readily passing through the recesses 15 in theends 11, the overhanging edges 10 of the grooves (i in the base-platebeing removed l at the side 20 to permit the free entrance of the feet4. Thus introduced each bottom piece may'enter its tenons 13 into thegrooves 8, and its feet into the grooves 6, and be slid therein againstthe side 12, where the forward edge of the foremost bottom piece entersa groove, 16. A column-rule 2 is then introduced against its unprotectedside, and another bottom piece, column of type, and column-rule 2 areintroduced, and so on until the type-bed is full.

The locking-bar 9, which is nearly of typeheight, is then introduced andmoved against the last bottom piece, 3. This locking-bar 9 has on eachend tenons 14, with projections 2S, one of which enters the groove S andthe other underlies the jaw 17, by which means it is held in place. Thecolumns of type are then placed upon the bottom pieces between thecolumnrules.

The columns ot' type are forcibly pressed laterally in place between thecolumn-rules by means of pressure applied to the locking-bar, which maybe done either by the screws 19, shown in Fig. 2, or by wedge blocks orquoins,

or by side-sticks whoseinclinedfaces bear upon each other, and one ofwhich sticks is moved longitudinally by any mechanical means.

The types of the columns may be pressed IOO firmly together endwise bypower applied to blocks at the ends ofthe columns, the medium beingscrewsor similar devices, as has just been described with reference tothe lateral movement of said types.

The type-bed may be secured upon the typeeylinder bythe usual meansthati s, by screws or clamps, as is well understood.

Either the grooves 8 and tenons 12S, or the grooves 6 'and feet 4, maybe the means for holding the bottom plates in plates, though bothtogether are preferable.

\Vhat is claimed is- Llemovable column-rules having feet or flanges 5extending throughout the length ot' the column of type, whereby greaterstrength with less thickness is secured, substantially as described.

2. The combination of the longitudinallylian ged column-rules 2,base-plates having 1ongitudinally rabbeted recesses, and bottom pieces,3, having rabbets 18 and flanged feet- 4, substantially as described.

In testimony whereof I have signed my name to this specifica-tion in thepresence of two subz 5 scribing witnesses.

. STEPHEN D. TUCKER.

Witnesses:

H. T. MUNsoN, M. B. PHILiPP.

